/*
 * Copyright (c) 2003 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  o Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 *  o Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.plealog.genericapp.ui.common;

import javax.swing.*;
import java.awt.*;
import java.io.Serial;


/**
 * A basic implementation of a JPanel with a gradient colored background.
 *
 * @author Karsten Lentzsch
 */

public class GradientPanel extends JPanel {
	@Serial
	private static final long serialVersionUID = 3645214319959566285L;
	private boolean _selected;
	private int _orientation;
	private Color _color1;
	private Color _color2;

	public static final int GRAD_ORIENTATION_LtoR = 0;
	public static final int GRAD_ORIENTATION_TLtoBR = 1;

	public GradientPanel(Color color1, Color color2) {
		super();
		_color1 = color1;
		_color2 = color2;
	}

	public void setGradientOrientation(int orientation) {
		_orientation = orientation;
	}

	public void setSelected(boolean sel) {
		_selected = sel;
	}

	public boolean isSelected() {
		return _selected;
	}

	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		if (!isOpaque() || isSelected()) {
			return;
		}
		int width = getWidth();
		int height = getHeight();

		Graphics2D g2 = (Graphics2D) g;
		Paint storedPaint = g2.getPaint();
		GradientPaint gp;
		switch (_orientation) {
			case GRAD_ORIENTATION_TLtoBR:
				gp = new GradientPaint(0, 0, _color1, width, height, _color2);
				break;
			default:
				gp = new GradientPaint(0, 0, _color1, width, 0, _color2);
		}
		g2.setPaint(gp);

		g2.fillRect(0, 0, width, height);
		g2.setPaint(storedPaint);
	}
}
